/// <summary>
/// Get various settings
/// </summary>
/// <param name="nativeBuffer"></param>
/// <param name="printerName"></param>
/// <param name="flags"></param>
/// <param name="pageRange"></param>
/// <param name="dModeHnd"></param>
void GetSettings(IntPtr nativeBuffer, out string printerName, out uint flags, out PageRange pageRange, out IntPtr dModeHnd)
{
IntPtr dNames = IntPtr.Zero;
IntPtr pRanges = IntPtr.Zero;
if (Is64Bits())
{
NativeMethods.PRINTDLGEX64 dlg = (NativeMethods.PRINTDLGEX64)Marshal.PtrToStructure(nativeBuffer, typeof(NativeMethods.PRINTDLGEX64));
dModeHnd = dlg.hDevMode;
dNames = dlg.hDevNames;
flags = dlg.Flags;
pRanges = dlg.lpPageRanges;
}
else
{
NativeMethods.PRINTDLGEX32 dlg = (NativeMethods.PRINTDLGEX32)Marshal.PtrToStructure(nativeBuffer, typeof(NativeMethods.PRINTDLGEX32));
dModeHnd = dlg.hDevMode;
dNames = dlg.hDevNames;
flags = dlg.Flags;
pRanges = dlg.lpPageRanges;
}
if (((flags & 2) == 2) && (pRanges != IntPtr.Zero))
{
NativeMethods.PRINTPAGERANGE printRange = (NativeMethods.PRINTPAGERANGE)Marshal.PtrToStructure(pRanges, typeof(NativeMethods.PRINTPAGERANGE));
pageRange = new PageRange((int)printRange.nFromPage, (int)printRange.nToPage);
}
else
{
pageRange = new PageRange(1);
}
if (dNames != IntPtr.Zero)
{
IntPtr ptrDevNames = IntPtr.Zero;
try
{
ptrDevNames = NativeMethods.GlobalLock(dNames);
NativeMethods.DEVNAMES devnames = (NativeMethods.DEVNAMES)Marshal.PtrToStructure(ptrDevNames, typeof(NativeMethods.DEVNAMES));
printerName = Marshal.PtrToStringAuto(
(IntPtr)(((long)ptrDevNames) + (devnames.wDeviceOffset * Marshal.SystemDefaultCharSize))
);
}
finally
{
if (ptrDevNames != IntPtr.Zero)
{
NativeMethods.GlobalUnlock(dNames);
}
}
}
else
{
printerName = string.Empty;
}
}
/// <summary>
/// Get dwResultAction from Dlg
/// </summary>
/// <param name="ptrPrintDlg"></param>
/// <returns></returns>
uint GetResultPrintDlgExHnd(IntPtr ptrPrintDlg)
{
if (Is64Bits())
{
NativeMethods.PRINTDLGEX64 dlg = (NativeMethods.PRINTDLGEX64)Marshal.PtrToStructure(ptrPrintDlg, typeof(NativeMethods.PRINTDLGEX64));
return(dlg.dwResultAction);
}
else
{
NativeMethods.PRINTDLGEX32 dlg = (NativeMethods.PRINTDLGEX32)Marshal.PtrToStructure(ptrPrintDlg, typeof(NativeMethods.PRINTDLGEX32));
return(dlg.dwResultAction);
}
}
/// <summary>
/// Frees memory associated with PRINTDLGEX32 or PRINTDLGEX64 structures
/// </summary>
/// <param name="ptr"></param>
void DeallocatePrintDlgExStruct(IntPtr ptr)
{
if (ptr != IntPtr.Zero)
{
IntPtr hMode = IntPtr.Zero;
IntPtr hNames = IntPtr.Zero;
IntPtr hPageRanges = IntPtr.Zero;
if (Is64Bits())
{
NativeMethods.PRINTDLGEX64 pDlg = (NativeMethods.PRINTDLGEX64)Marshal.PtrToStructure(ptr, typeof(NativeMethods.PRINTDLGEX64));
hMode = pDlg.hDevMode;
hNames = pDlg.hDevNames;
hPageRanges = pDlg.lpPageRanges;
}
else
{
NativeMethods.PRINTDLGEX32 pDlg = (NativeMethods.PRINTDLGEX32)Marshal.PtrToStructure(ptr, typeof(NativeMethods.PRINTDLGEX32));
hMode = pDlg.hDevMode;
hNames = pDlg.hDevNames;
hPageRanges = pDlg.lpPageRanges;
}
if (hMode != IntPtr.Zero)
{
NativeMethods.GlobalFree(hMode);
}
if (hNames != IntPtr.Zero)
{
NativeMethods.GlobalFree(hNames);
}
if (hPageRanges != IntPtr.Zero)
{
NativeMethods.GlobalFree(hPageRanges);
}
Marshal.FreeHGlobal(ptr);
}
}
/// <summary>
/// Allocate memory associated with PRINTDLGEX32 or PRINTDLGEX64 structures
/// </summary>
IntPtr AllocatePrintDlgExStruct()
{
NativeMethods.PRINTPAGERANGE pageRange;
IntPtr ptr = IntPtr.Zero;
pageRange.nToPage = (uint)mDialogOwner.PageRange.PageTo;
pageRange.nFromPage = (uint)mDialogOwner.PageRange.PageFrom;
try
{
//Handle 32 bit case first
if (!Is64Bits())
{
NativeMethods.PRINTDLGEX32 pDlg = new NativeMethods.PRINTDLGEX32();
pDlg.hwndOwner = mWinHandle;
pDlg.nMinPage = mDialogOwner.MinPage;
pDlg.nMaxPage = mDialogOwner.MaxPage;
pDlg.Flags = 0x9c0004;
if (mDialogOwner.PageRangeEnabled)
{
pDlg.lpPageRanges = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(NativeMethods.PRINTPAGERANGE)));
pDlg.nMaxPageRanges = 1;
if (mDialogOwner.PageRangeSelection == PageRangeSelection.UserPages)
{
pDlg.nPageRanges = 1;
Marshal.StructureToPtr(pageRange, pDlg.lpPageRanges, false);
pDlg.Flags |= 2;
}
else
{
pDlg.nPageRanges = 0;
}
}
else
{
pDlg.lpPageRanges = IntPtr.Zero;
pDlg.nMaxPageRanges = 0;
pDlg.Flags |= 8;
}
if (mDialogOwner.PrintQueue != null)
{
pDlg.hDevNames = InitializeDevNames(mDialogOwner.PrintQueue.FullName);
if (mDialogOwner.PrintTicket != null)
{
pDlg.hDevMode = InitializeDevMode(mDialogOwner.PrintQueue.FullName, mDialogOwner.PrintTicket);
}
}
ptr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(NativeMethods.PRINTDLGEX32)));
Marshal.StructureToPtr(pDlg, ptr, false);
return(ptr);
}
//Go with 64 bit structure
NativeMethods.PRINTDLGEX64 pDlg64 = new NativeMethods.PRINTDLGEX64();
pDlg64.hwndOwner = mWinHandle;
pDlg64.nMinPage = mDialogOwner.MinPage;
pDlg64.nMaxPage = mDialogOwner.MaxPage;
pDlg64.Flags = 0x9c0004;
if (mDialogOwner.PageRangeEnabled)
{
pDlg64.lpPageRanges = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(NativeMethods.PRINTPAGERANGE)));
pDlg64.nMaxPageRanges = 1;
if (mDialogOwner.PageRangeSelection == PageRangeSelection.UserPages)
{
pDlg64.nPageRanges = 1;
Marshal.StructureToPtr(pageRange, pDlg64.lpPageRanges, false);
pDlg64.Flags |= 2;
}
else
{
pDlg64.nPageRanges = 0;
}
}
else
{
pDlg64.lpPageRanges = IntPtr.Zero;
pDlg64.nMaxPageRanges = 0;
pDlg64.Flags |= 8;
}
if (mDialogOwner.PrintQueue != null)
{
pDlg64.hDevNames = InitializeDevNames(mDialogOwner.PrintQueue.FullName);
if (mDialogOwner.PrintTicket != null)
{
pDlg64.hDevMode = InitializeDevMode(mDialogOwner.PrintQueue.FullName, mDialogOwner.PrintTicket);
}
}
ptr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(NativeMethods.PRINTDLGEX64)));
Marshal.StructureToPtr(pDlg64, ptr, false);
return(ptr);
}
catch (Exception)
{ //Free buffer on error
DeallocatePrintDlgExStruct(ptr);
throw;
}
}
/// <summary>
/// Allocate memory associated with PRINTDLGEX32 or PRINTDLGEX64 structures
/// </summary>
IntPtr AllocatePrintDlgExStruct()
{
NativeMethods.PRINTPAGERANGE pageRange;
IntPtr ptr = IntPtr.Zero;
pageRange.nToPage = (uint)mDialogOwner.PageRange.PageTo;
pageRange.nFromPage = (uint)mDialogOwner.PageRange.PageFrom;
try
{
//Handle 32 bit case first
if (!Is64Bits())
{
NativeMethods.PRINTDLGEX32 pDlg = new NativeMethods.PRINTDLGEX32();
pDlg.hwndOwner = mWinHandle;
pDlg.nMinPage = mDialogOwner.MinPage;
pDlg.nMaxPage = mDialogOwner.MaxPage;
pDlg.Flags = 0x9c0004;
if (mDialogOwner.PageRangeEnabled)
{
pDlg.lpPageRanges = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(NativeMethods.PRINTPAGERANGE)));
pDlg.nMaxPageRanges = 1;
if (mDialogOwner.PageRangeSelection == PageRangeSelection.UserPages)
{
pDlg.nPageRanges = 1;
Marshal.StructureToPtr(pageRange, pDlg.lpPageRanges, false);
pDlg.Flags |= 2;
}
else
{
pDlg.nPageRanges = 0;
}
}
else
{
pDlg.lpPageRanges = IntPtr.Zero;
pDlg.nMaxPageRanges = 0;
pDlg.Flags |= 8;
}
if (mDialogOwner.PrintQueue != null)
{
pDlg.hDevNames = InitializeDevNames(mDialogOwner.PrintQueue.FullName);
if (mDialogOwner.PrintTicket != null)
pDlg.hDevMode = InitializeDevMode(mDialogOwner.PrintQueue.FullName, mDialogOwner.PrintTicket);
}
ptr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(NativeMethods.PRINTDLGEX32)));
Marshal.StructureToPtr(pDlg, ptr, false);
return ptr;
}
//Go with 64 bit structure
NativeMethods.PRINTDLGEX64 pDlg64 = new NativeMethods.PRINTDLGEX64();
pDlg64.hwndOwner = mWinHandle;
pDlg64.nMinPage = mDialogOwner.MinPage;
pDlg64.nMaxPage = mDialogOwner.MaxPage;
pDlg64.Flags = 0x9c0004;
if (mDialogOwner.PageRangeEnabled)
{
pDlg64.lpPageRanges = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(NativeMethods.PRINTPAGERANGE)));
pDlg64.nMaxPageRanges = 1;
if (mDialogOwner.PageRangeSelection == PageRangeSelection.UserPages)
{
pDlg64.nPageRanges = 1;
Marshal.StructureToPtr(pageRange, pDlg64.lpPageRanges, false);
pDlg64.Flags |= 2;
}
else
{
pDlg64.nPageRanges = 0;
}
}
else
{
pDlg64.lpPageRanges = IntPtr.Zero;
pDlg64.nMaxPageRanges = 0;
pDlg64.Flags |= 8;
}
if (mDialogOwner.PrintQueue != null)
{
pDlg64.hDevNames = InitializeDevNames(mDialogOwner.PrintQueue.FullName);
if (mDialogOwner.PrintTicket != null)
pDlg64.hDevMode = InitializeDevMode(mDialogOwner.PrintQueue.FullName, mDialogOwner.PrintTicket);
}
ptr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(NativeMethods.PRINTDLGEX64)));
Marshal.StructureToPtr(pDlg64, ptr, false);
return ptr;
}
catch (Exception)
{ //Free buffer on error
DeallocatePrintDlgExStruct(ptr);
throw;
}
}
